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How to distinguish the quality of solar panels

Solar panel is the core material of photovoltaic system. The quality of solar panels on the market is also uneven. If there is no professional equipment and technical expertise for the time being, how should we distinguish the quality of solar panels? 1 look at the color Generally speaking, monocrystalline silicon and polycrystalline silicon solar panels have blue appearance, and they are uniformly light blue or sky blue. If the color of the panel is dark and the color is different, then the workmanship is definitely not meticulous. 2 Look at the surface The tempered glass surface of the battery board should be flat and free of foreign matter. In order to increase the production speed, some small manufacturers do not clean the silicone gel that has dripped on the surface of tempered glass. If the silicone is not cleaned, it will affect the power generation efficiency. 3 Look at the battery Each of the battery slices on the battery board is complete, and is formed by cutting the whole body. However, many irregular manufacturers on the market spliced with broken cells to form seemingly complete cells for welding. When we observe, we will see if there are any traces of cutting. There are great risks in this way. The initial stage may not be obvious, but the spliced battery is easy to be disconnected again later, which affects the use of the entire battery board. Of course, this situation is hard to find with the naked eye. 4 Look at the back Look at the quality of the back pressure, whether there are unevenness after the pressure, such as bubbles, wrinkles and the like. 5 Look at the border Due to the low barrier to entry in the solar panel industry, many small manufacturers use manual framing. Due to the uneven framing strength of each frame, the close contact of the frame is not the same, and the shape is not strictly r

How to choose solar panels?

Definition of solar panel: Solar panel is a device that absorbs sunlight and directly or indirectly converts solar radiation energy into electricity through the photoelectric effect or photochemical effect. The main material of most solar panels is "silicon", but due to the relatively low production cost It is so big that it has some limitations in its universal use. Compared to ordinary batteries and rechargeable batteries, solar cells are more energy-efficient and environmentally friendly green products. The classification of solar panels: The solar cells currently on the market are divided into amorphous silicon and crystalline silicon. Among them, crystalline silicon can be divided into polycrystalline silicon and single crystal silicon. From the perspective of the photoelectric conversion efficiency of the two materials: single crystal silicon sunpower (up to 22%)> polycrystalline silicon (18%). Selection method of solar panel: 1. When we purchase solar panels, the focus is on the power of solar cells. Generally speaking, the power of solar panels is directly proportional to the area of solar wafers. The area of a solar cell wafer is not exactly the same as the area of a solar encapsulation panel, because although some solar cell panels are large, the gap between a single solar wafer arrangement is wide, and the power of such solar cell panels is not necessarily high. 2. Generally speaking, is the power of the solar cell panel greater the better? In this way, the electric current generated in the sun is large, and the built-in battery can be quickly filled. But in reality, you need to find a balance between the power of solar panels and the portability of solar chargers. Solar panel selection tips: With the extensive use of various solar products, the use of solar panels in our lives is becoming more and more widespread. But in the face of

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